1. University of Tennessee, Nuclear Engineering Department Knoxville, Tennessee 37996-2300
2. Martin Marietta Utility Systems Building X-1000, MS 5023, Piketon, Ohio 45661
3. Japan Atomic Energy Research Institute Tokai Research Establishment, Tokai-mura, Naka-gun, Ibaraki-ken 319-11, Japan
4. University of Tennessee, Nuclear Engineering Department Knoxville, Tennessee 3 7996-2300
5. Martin Marietta Energy Systems Oak Ridge National Laboratory, P.O. Box 2008, Building 6011 MS 6370, Oak Ridge, Tennessee 37831-6370